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    <title>Document</title>
    <style>
        ul {
            overflow: auto;
            width: 10em;
            height: 8em;
            padding: .3em .5em;
            border: 1px solid silver;
            background: linear-gradient(white 30%, transparent),
                radial-gradient(at 50% 0, rgba(0, 0, 0, .2),
                    transparent 70%);
            background-repeat: no-repeat;
            background-size: 100% 50px, 100% 15px;
            background-attachment: local, scroll
        }
    </style>
</head>

<body>
    <ul>
        <li>Ada Catlace</li>
        <li>Alan Purring</li>
        <li>Schrödingcat</li>
        <li>Tim Purrners-Lee</li>
        <li>WebKitty</li>
        <li>Json</li>
        <li>Void</li>
        <li>Neko</li>
        <li>NaN</li>
        <li>Cat5</li>
        <li>Vector</li>
    </ul>
</body>

</html>